package com.heima.behavior.service.impl;

import com.alibaba.fastjson.JSON;
import com.heima.behavior.service.ApBehaviorEntryService;
import com.heima.behavior.service.ApReadBehaviorService;
import com.heima.common.constants.article.HotArticleConstants;
import com.heima.common.exception.CustException;
import com.heima.model.behavior.dtos.ReadBehaviorDTO;
import com.heima.model.behavior.pojos.ApBehaviorEntry;
import com.heima.model.behavior.pojos.ApReadBehavior;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.mess.app.NewBehaviorDTO;
import com.heima.model.threadlocal.AppThreadLocalUtils;
import com.mongodb.client.result.UpdateResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;

import java.util.Date;

/**
 * @Program: day57-leadnews
 * @Description:
 * @Data: 2022/8/4 21:05
 **/
@Service
@Slf4j
public class ApReadBehaviorServiceImpl implements ApReadBehaviorService {

    @Autowired
    ApBehaviorEntryService apBehaviorEntryService;

    @Autowired
    MongoTemplate mongoTemplate;

    @Autowired
    RabbitTemplate rabbitTemplate;

    @Override
    public ResponseResult readBehavior(ReadBehaviorDTO dto) {
        // 1. 校验参数 文章id必须传
        if (dto.getArticleId() == null){
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID,"操作异常，文章不存在！");
        }
        // 2. 根据登录用户id 或 设备id查询行为实体数据(阅读操作可不登录)
        Integer userId = AppThreadLocalUtils.getUser().getId();
        Integer equipmentId = dto.getEquipmentId();
        // 查询对应的行为实体  获取ApReadBehavior 中的entryid字段
        ApBehaviorEntry apBehaviorEntry = apBehaviorEntryService.findByUserIdOrEquipmentId(userId, equipmentId);

        //查询是否阅读过
        Query query = Query.query(Criteria.where("entryId").is(apBehaviorEntry.getId()).and("articleId").is(dto.getArticleId()));
        ApReadBehavior apReadBehavior = mongoTemplate.findOne(query, ApReadBehavior.class);
        // 3. 判断阅读行为是否存在
        if (apReadBehavior != null){
            // 4. 存在  将阅读行为的count字段加1 并修改
            Short count =  (short) (apReadBehavior.getCount() + 1);
            Update update = new Update();
            update.set("count",count).set("createdTime",new Date()).set("updatedTime",new Date());
            UpdateResult updateResult = mongoTemplate.updateFirst(query, update, ApReadBehavior.class);
//            return ResponseResult.okResult(updateResult);
        } else {
            // 5. 不存在  创建阅读行为 并初始化count字段值为 1
            apReadBehavior = new ApReadBehavior();
            apReadBehavior.setEntryId(apBehaviorEntry.getId());
            apReadBehavior.setArticleId(dto.getArticleId());
            apReadBehavior.setCount((short)1);
            apReadBehavior.setCreatedTime(new Date());
            apReadBehavior.setUpdatedTime(new Date());
            // 保存阅读行为
            ApReadBehavior readBehavior = mongoTemplate.save(apReadBehavior);
//            return ResponseResult.okResult(readBehavior);
        }
        // 发送点赞行为消息，用于修改文章行为汇总数量 更改文章热度
        NewBehaviorDTO mess = new NewBehaviorDTO();
        mess.setType(NewBehaviorDTO.BehaviorType.VIEWS);
        mess.setArticleId(dto.getArticleId());
        mess.setAdd(1);
        rabbitTemplate.convertAndSend(HotArticleConstants.HOT_ARTICLE_SCORE_BEHAVIOR_QUEUE, JSON.toJSONString(mess));
        log.info("阅读行为 发送消息 ==>{}",JSON.toJSONString(mess));
        return ResponseResult.okResult();
    }
}
